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5. TROUBLESHOOTING
5.5 Remedies for warnings
CAUTION
If [AL. E6], [AL. E7], [AL. E9], [AL. EA], or [AL. EB] occurs, the servo amplifier will be the servo-off status. If
any other warning occurs, operation can be continued but an alarm may occur and proper operation may not
be performed.
Refer to this section and "MELSERVO-J4 Servo Amplifier Instruction Manual (Troubleshooting)" to remove
the cause of the warning. Use MR Configurator2 to refer to the cause of warning occurrence.
Alarm No.: EF
Name: Reverse-side stop warning
Alarm content
Detail
Detail name
No.
EF.1
Reverse-side
(1) Setting of the "forward/
stop warning
If [AL. E3 Absolute position counter warning] occurs, always make home position
setting again. Otherwise, it may cause an unexpected operation.
POINT
This section explains the details of warnings exclusively for the MR-J4-(DU)_B_-
LL. Refer to "MELSERVO-J4 Servo Amplifier Instruction Manual
(Troubleshooting)" for other warnings.
When any of the following warnings occurs, do not cycle the power of the servo
amplifier repeatedly to restart. Doing so will cause a malfunction of the servo
amplifier and servo motor. If the power of the servo amplifier is switched off/on
during the warnings, allow more than 30 minutes for cooling before resuming
operation.
[AL. 91 Servo amplifier overheat warning] [AL. E0 Excessive regeneration
warning]
[AL. E1 Overload warning 1]
[AL. EC Overload warning 2]
Warnings (except [AL. F0 Tough drive warning]) are not recorded in the alarm
history.
During the pressure control mode, the set reverse-side stop position was exceeded.
Cause
Check if [Pr. PT12] is
reverse-side stop
set to "_ 1 _ _".
function" in [Pr. PT12]
is incorrect.
[AL. E2 Servo motor overheat warning]
Check method
Check result
[Pr. PT12] is not set
to "_ 1 _ _".
5 - 7
Action
Target
Set [Pr. PT12] to "_
[B]
1 _ _".
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